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Monitoring of FRP-repair debonding using OTDR techniques

  • Shuang Hou*
  • , C. S. Cai
  • , Jinping Ou
  • *Corresponding author for this work
  • Louisiana State University
  • Dalian University of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Debonding failure has been reported as the dominant failure mode for FRP strengthening in flexure. This paper explores a novel debonding monitoring method for FRP strengthened structures by means of OTDR-based fiber optic technology. Interface slip as a key factor in debonding failures will be measured through sensing optic fibers. FRP pulling tests were conducted to verify the proposed monitoring method. It is found that the proposed method is feasible in slip measurement with high sensitivity, and would be cost effective because of the low price of sensors used, which shows its potential for large-scale applications in civil infrastructures, especially for bridges.

Original languageEnglish
Title of host publicationEarth and Space Conference 2008
Subtitle of host publicationProceedings of the 11th Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments
PublisherASCE - American Society of Civil Engineers
ISBN (Print)9780784409886
DOIs
StatePublished - 2008
Externally publishedYes
EventEarth and Space Conference 2008: Proceedings of the 11th Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments - Long Beach, CA, United States
Duration: 3 Mar 20085 Mar 2008

Publication series

NameEarth and Space Conference 2008: Proceedings of the 11th Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments
Volume323

Conference

ConferenceEarth and Space Conference 2008: Proceedings of the 11th Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments
Country/TerritoryUnited States
CityLong Beach, CA
Period3/03/085/03/08

Keywords

  • Debonding
  • FRP
  • OTDR
  • Slip

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